Fragility of network-forming glasses

A universal dependence on the topological connectivity

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6 Citations (Scopus)

Abstract

The fragilities of over 150 different network-forming glass melts are shown to conform to a common dependence on just one parameter: the connectivity of the weakest network structure present in the associated glass solid. This includes both nonoxide network-forming chalcogenide melts as well as a variety of alkali oxide glasses, and spans a broad range of connectivity, φ, from polymeric structures (φ=2) to overconstrained random networks with connectivities well in excess of the rigidity threshold (φC=2.4). A theoretical framework for the origin of this universal pattern is offered within the context of entropic models of the glass transition.

Original languageEnglish
Article number062804
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume92
Issue number6
DOIs
StatePublished - Dec 2 2015

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Connectivity
glass
Random Networks
Glass Transition
Network Structure
Rigidity
Oxides
Excess
rigidity
alkalies
Range of data
thresholds
oxides
Glass
Model
Framework
Context

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

Cite this

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